16 levels of resistance for a progressive workout: from aerobic fat burning to body shaping. Levels 1–4 provide early assistance, 5–8 midterm functional training, and 9–12 late rehabilitation. A large display shows workout time, speed, distance, and calories to help you reach your fitness goals. Safe knee protection: this harmless aerobic elliptical machine pedal exerciser uses a movement trajectory that relieves joint impact, protects knee soft tissue, and is safe for the whole family to use without knee strain. Dual function magnetic elliptical machine: supports both seated and standing postures, with forward or reverse motion. Seated exercise helps you relax while maintaining leg vitality; standing exercise effectively stimulates hip and leg muscles. Silent operation and portability: features a lownoise design for quiet, smooth performance, so you can exercise without disturbing others, even late at night. The compact design makes it easy to carry and move to a study or bedroom. Use scenarios: At home daily cardio and body shaping in your living room or bedroom. Gentle rehabilitation or lowimpact conditioning with seated or standing workouts. Latenight or earlymorning sessions in shared spaces without neighborhood or family disturbance.